Joule Thief

[electricme]

@gadget,

ok here is the weird bifilar / secondary setup on a large black toroid with a know Value given to me by Greg for EB research . the number is visible . Its low perm high flux . I am getting over 1900 volts . this setup Takes the Tv out . Im on satellite and the tv is about 8 feet away .The Voltage is fluctuating as i get near the setup .I need to Box this one .. using tip121 50x2 primary CW 108 secondary (green) ccw . I tried this on two meters one ol'ed on the 750 volt scale . this one is set on the higest setting 300+ and the meter can measure 2000 volts before it Ol's

Gadget

Phew, do I see 1900 odd volts on your setup?

I can see I'mm going to have to take a serious look at getting a High Voltage meter from somewhere soon.

Try putting a few PC power supply capacitors in series and see what sort of energy they put out when you short them, (seriously, wear ear muffs if you try this and rubber gloves).

jim

[hazens1]

Update:

I'm drawing 25ma at 1.25v input to light 64 super brights using this tiny 1/4 inch toroid in classic JT configuration.

I put a diode and a cap to measure output voltage. I measured 87.3 volts in a 104k-100v Green 100nf capacitor from Radio Shack.

The last 2 pics, I took the whole thing and moved it to the 64 LED test board and it's now running off a tiny 1.5v button cell that has 1.13v left in it.

[Paul-R]

I am pretty bambouzled by the exotic thinking in this thread, and hope
that this enquiry is not too facile.

I notice from the xee2 post, #5903, that he appears to be supplying 50mA
at 1.5v, and driving a flourescent tube marked 5 watt.

Is this load actually 5 watt? If so, your overunity counter should be off the
scale.

Paul.

[electricme]

@Hazens1
Good ideas come from dreamin, good work.

I woke up from my own dream and could not go back to sleep.. It's 3:00 am here in Iowa. My dream directed me to take my smallest toroid, a 1/4 inch that I took out of a 13 watt CFL and wind a classic JT and it would light the world 

So I quickly put a 14t-14t bifillar on it and hooked it up using a 1k ohm and a 2n2222. Man that thing is tiny! Barely bigger than a single 5mm LED! I fired it up with a nearly dead AA and the pictures say it all 

I have 64 LEDs in parallel on a board for testing high output JT circuits. WOW!!! These are 64 of those 100 x 5mm 20,000mcd LEDs I got from Ebay and they are bright 

This has got to be a record for the smallest, simplist, highest output classic JT. It looks like it could light way more than the 64 that I have hooked up too 

I'm getting tired again. I'll take measurements in the morning and some more detailed pics.

Pictures were taken in pitch dark with the flash off.

I don't know why but I am really amased at the scope of the work we have all been doing here on Bills thread, this is really excellent work.

OK now to offer another suggestion to all those who have bright LEDs and tubes.

Now it's time to put the JT illuminators hanging from the roof/ceilings, then see how much light is produced.
Try and "project" the light using a concave mirror, on of the camping magnifying ones.

To find the focal point, direct sunlight off it onto a wall, when the light is a tiny pin prick, measure the distance from the wall to the mirror, divide the mirror diameter into the length away from the wall. = FP
Mirrer dia           = m
Mir2wall n inches = L
Divide    m into L = F P

Now you can project the light of a JT where ever you want it to go.
Turn a 3W LED into a search light.

jim

[stprue]

I am pretty bambouzled by the exotic thinking in this thread, and hope
that this enquiry is not too facile.

I notice from the xee2 post, #5903, that he appears to be supplying 50mA
at 1.5v, and driving a flourescent tube marked 5 watt.

Is this load actually 5 watt? If so, your overunity counter should be off the
scale.

Paul.

We haven't created any overunity here just an extremely efficient way to make things light up (leds/CLF)  Between the voltage and the frequencies we create efficiencies.  There is a lot more to it then that and there are a lot more qualified people here to ansewer your question in much greater depth but that's the gist of it!